html,body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#left {
  float: left;
  height: 100%;
  width: 200px;
  box-sizing: border-box;
  background: rgb(37, 37, 38);
  overflow-x: scroll;
}
#right {
  float: right;
  height: 100%;
  width: calc(100% - 200px);
  box-sizing: border-box;
  background: rgb(30, 30, 30);
  position: relative;
}

#right .placeholder {
  font-size: 24px;
  font-weight: bold;
  color: gray;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

ul#left-list {
  list-style: none;
  color: white;
  padding-left: 0;
  margin-left: 0;
  font-size: 0px;
}

ul#left-list li:hover {
  background-color: rgba(201, 201, 201, 0.5);
}

ul#left-list li {
  line-height: 1.5;
  cursor: pointer;
}

.noDir {
  padding-left: 18px;
  font-size: 16px;
}

.isDir {
  font-size: 16px;
  padding-left: 10px;
}

.trangle {
  width: 0;
  height: 0;
  display: inline-block;
  border: 4px solid white;  
  border-top-color: transparent;
  border-right-color: transparent;
  border-bottom-color: transparent;
}
